UD5 Toolkit
Random Medieval Profession - Online RPG Background
Generate a random medieval occupation with a short description. For NPCs or historical curiosity. Local list.
Online Games - Fun & Casual
89+ toolsFlexbox Froggy Simulator - Online Learn CSS Flexbox Game
A replica of the famous Flexbox Froggy game: solve alignment puzzles by writing CSS. Progress saved locally. Fun frontend learning.
Simon Says Game - Online Memory Sequence Challenge
Repeat the growing color sequence. How far can you go? Classic memory game with sound and animations.
Word Search Creator - Online Generate & Print Puzzle
Enter a list of words and create a custom word search grid. Choose difficulty, print or export as PDF. Great for teachers.
Dice Notation Roller - Online 2d20, 4d6 Drop Lowest RPG Tool
Enter standard dice notation (e.g., 2d8+3, 4d6k3) and see the roll result and individual dice. Must for tabletop RPG.
Pong Game - Online Classic Two‑Player Arcade
The original arcade Pong recreated in HTML5. Play against AI or local two‑player. Score up to 11 and win. Pure retro fun.
World Flag Quiz - Online Guess the Country by Flag
Random world flags shown; pick the correct country name from four choices. Score and streak. Learn geography.
Lunar Lander Simulator - Online Retro Thrust Game
Control a lunar module and try to land softly on the moon. Manage fuel and thrust. Classic arcade physics. Canvas.
Tetris Game - Online Classic Block Puzzle
Enjoy classic Tetris in your browser. Rotate, move, and drop tetrominoes. Clear lines and score. Fully local JavaScript.
Sudoku Generator - Online Play & Create 9x9 Puzzles
Generate a random Sudoku puzzle with a unique solution. Choose difficulty and type numbers on the board. Timer and mistake counter.
Crossword Builder - Online Create & Solve Simple Puzzles
Build a small crossword by adding words and clues. Export as a printable grid or solve in browser. Perfect for classrooms.
Bass Fretboard Trainer - Online Note Recognition Game
A random note name appears; click the correct position on the bass fretboard. Beat your time and accuracy.
Random Logic Puzzle Generator - Online Grid Problems
Generate a small logic puzzle grid (like Einstein’s riddle) with clues. Solve in browser or print. Local generation.
Gradient Match Game - Online Drag & Match Linear CSS
Recreate the target CSS linear gradient by adjusting stops and colors. A unique game for front‑end developers to master gradients.
Binary‑Decimal Conversion Quiz - Online Speed Drills
Test how fast you can convert between binary and decimal. Timed drills with increasing difficulty. Learn base‑2 fluency.
Random Color Naming Challenge - Online Eye Test
See a random color and type its name. Score based on accuracy. Fun for designers. Local.
Mental Math Trainer - Online Timed Arithmetic
Solve random arithmetic problems under a time limit. Track your score and improve mental calculation. No data collected.
Virtual Deck Shuffler & Random Card Drawer
A fully animated deck of 52 cards. Shuffle, cut, or draw a specific number of cards. Perfect for missing cards in a real deck.
Memory Sequence Game - Online Watch & Repeat Colors
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Chess Board Viewer - Online Setup FEN & Analyze Positions
Set up a chess position using FEN notation or drag pieces. Share the position link or screenshot. No AI, just board.
Perfect Circle Drawing Challenge - Online Canvas Game
Try to draw a perfect circle freehand. Score based on roundness. Fun and addictive. No data sent.
Random Skill Generator - Online Fantasy RPG Professions
Generate a random profession or skill set for RPG characters (blacksmith, alchemist, etc.). With relevant items.
Virtual Pet Tamagotchi - Online Feed & Play
Keep a virtual pet alive by feeding, playing, and cleaning. Its state persists in localStorage. Come back or it gets sad.
Impossible Quiz - Online Tricky Question Challenge
Answer a series of deliberately confusing and trick questions. Lives system and funny wrong answers. Playful, no data stored.
Dice Probability Heatmap - Online Visual Stat Calculator
Visualize the probability distribution of dice rolls as a color‑coded heatmap. For any NdM combination. RPG strategist's dream.
Simon Says Color Game - Online Memory Challenge
Watch and repeat the growing sequence of colored buttons. How long is your memory? Classic electronic game replica.
Scattergories List Generator - Online Categories & Letter Roll
Generate random Scattergories‑style lists with a random letter and 12 categories. Great for online game night.
Pig Dice Game - Online Risk & Hold Turn-Based
Play the Pig dice game: roll to accumulate points, but a 1 ends your turn. First to 100 wins. Simple hot‑seat local game.
Rock Paper Scissors - Online Best of 3 & Score Tracker
Play Rock Paper Scissors against a smart random CPU with win/loss/draw tracking. Smooth CSS animations. No ads, pure fun.
Random Dungeon Map Generator - Online RPG Floor Plan
Generate random dungeon maps with rooms and corridors. Use for tabletop RPGs. Every layout is unique. Export as image.
Random Element Combination - Online Little Alchemy Style
Combine two random elements and get a surprising result. Inspired by Little Alchemy. Infinite ideas. All local.
Capital Cities Quiz - Online World Geography Trivia
Test your knowledge of world capitals. Multiple choice, timed rounds. Improve your geography skills. No data collection.
Rock Paper Scissors Lizard Spock - Online Big Bang Game
Play the extended 5‑gesture version against a CPU. Rules explained. Score tracking. A geek classic.
Brick Breaker - Online Classic Breakout Arcade
Smash bricks with a ball and paddle. Multiple rows of colored bricks, power‑ups, and score tracking. All built with HTML5 Canvas.
US States & Capitals Quiz - Online Geography Game
Test your knowledge: given a state name, pick its capital. Timed, with scoreboard. Learn all 50. No login.
Anagram Solver - Online Unscramble Letters to Words
Type letters and discover all possible English words. Useful for word games like Scrabble. Dictionary lookup is client‑side.
Local Typing Race - Online Side‑By‑Side Word Competition
Two players type the same text on the same keyboard (WASD vs Arrow zones) and race to finish first. Fun classroom game.
Card Deck Probability Calculator - Online Poker & Draw
Calculate odds of drawing specific cards or poker hands from a standard deck. Learn combinations. Local math.
Dice Roll Simulator & Stats - Online Massive Roll Trials
Roll any number of dice thousands of times and see a live bar chart of the sum distribution. Great for game designers.
NATO Phonetic Alphabet Quiz - Online Learn Alpha Bravo
Test your knowledge of the NATO phonetic alphabet. Timed quiz with letter‑to‑code and code‑to‑letter modes.
Snake Game - Online Classic Arcade in Browser
Play the classic Snake game inside your browser. Arrow keys to move, eat the apple, grow longer. High score tracked locally.
Random Video Game Plot Generator - Online Idea
Create a random video game premise with a setting, protagonist, and twist. For game jams and creative writing. All local.
Dice Roll Probability Calculator - Online Sum & Graph
Select the number and type of dice, then view the exact probability for each possible sum as a bar chart. Great for board game strategy. Local computation.
Whack-a-Mole - Online Reaction & Speed Game
Hit the popping moles as fast as you can before they disappear. Increasing difficulty. Great for hand‑eye coordination. Browser only.
Connect Four - Online PvP & AI Board Game
Play the classic Connect Four in your browser against a friend or CPU. Drop discs to get four in a row. Clean SVG board, local logic.
Morse Code Speed Tapping Game – Online Decode & Type Race
Morse characters flash on screen; you must tap them correctly on a single button. Points for accuracy and speed. Learn Morse in a fun way.
Multi Dice Roller - Online 3D Animated Dice
Roll virtual dice with animated 3D spins. Choose any number and type. See total and individual results. Fun for games.
Element Hangman - Online Guess the Chemical Symbol
Play Hangman where the words are element names. Learn the periodic table while having fun. High score localStorage.
Country Outline Quiz - Online Identify by Shape
A silhouette of a country appears; type the name. Timed guesses. Great for geography buffs.
Bingo Card Creator - Online Custom & Printable Cards
Enter a list of words or phrases and generate unique, printable bingo cards. Perfect for icebreakers and classrooms.
Flappy Bird Clone - Online Side‑Scroll Tap Game
Help the bird fly through pipes without touching them. Click or tap to flap. Track your high score in localStorage. Classic time‑waster.
Hangman Word Game - Online Guess the Hidden Word
Classic Hangman with random English words. Visual hangman drawing, keyboard support. Guess letters and save the stickman. Completely local.
Fantasy Name Generator - Online Elf Dwarf & Dragon Names
Generate names for fantasy races: elves, dwarves, orcs, dragons. Ideal for D&D and fiction writing. Markove chain local.
Cyberpunk Name Generator - Online Street Samurai
Create a dystopian cyberpunk character name (handle or real). Perfect for Shadowrun or Cyberpunk RED.
Random Fictional Disease Name - Online RPG Plague
Create a frightening or silly disease name for your story or TTRPG. Includes symptoms and transmission. Pure imagination.
Number Memory Trainer - Online Recall Digits
A sequence of digits flashes for a few seconds. Type it back. Increase length. Improve your working memory.
Canvas Sprite Animation - Online Play Sprite Sheet
Load a sprite sheet, define frames, and play an animation on a canvas. Control frame rate and loop. Game dev tool.
Random Board Game Name Generator - Online Idea Spark
Generate a random name for a board game or card game. Combines adjectives and nouns. Ignite your game design creativity.
Random Card Picker - Online Deck Draw & Shuffle
Click to draw random playing cards from a shuffled deck. The full deck is displayed. Use for decision or magic tricks.
Random Dungeon Name Generator - Online RPG Delve
Create a foreboding dungeon name for your next D&D adventure. With optional adjective and location. Pure fantasy fun.